<section>
  <h4>Basic Tree</h4>
  <d-tree #basicTree [tree]="data1" (nodeSelected)="onNodeSelected($event)" (nodeToggled)="onNodeToggled($event)">
  </d-tree>
  <d-button circled="true" bsSize="sm" bsStyle="stress" (click)="changeTree()">
    ChangeData
  </d-button>
</section>
